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Vivax WGH12E Service Manual

Residential air conditioners
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RESIDENTIAL AIR CONDITIONERS
Service Manual
MODELS: WGH12E/GH12E
(Refrigerant R410A)
R410A Systems
Vidicon Ltd. Commercial Air Conditioners

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Summary of Contents for Vivax WGH12E

  • Page 1 RESIDENTIAL AIR CONDITIONERS Service Manual MODELS: WGH12E/GH12E (Refrigerant R410A) R410A Systems Vidicon Ltd. Commercial Air Conditioners...
  • Page 2 WGH-E / GH-E Model: 12 ......................2 ..................4 ............5 ............7...
  • Page 3 WGH-E / GH-E Model: 12...
  • Page 4 WGH-E / GH-E Model: 12 WGH12E GH12E MODE ON/OFF...
  • Page 5 WGH-E / GH-E Model: 12 WGH12E-GH12E (LCLH) WGH12E-GH12E (LC) WHG12E WGH12E...
  • Page 6 WGH-E / GH-E Model: 12 GH12E (LCLH) GH12E (LC)
  • Page 7 WGH-E / GH-E Model: 12 Cooling Heating Condition Condition Indoor:DB20°C WB15°C Indoor:DB27°C WB19°C Indoor air flow:Super High Indoor air flow: Super High Pipe length: 5m Pipe length: 5m Compressor speed (rps) Compressor speed (rps)
  • Page 8 WGH-E / GH-E Model: 12 WGH12E-GH12E (LC) Cooling Heating Condition Condition Indoor:DB20°C WB15°C Indoor:DB27°C WB19°C Indoor air flow:Super High Indoor air flow: Super High Pipe length: 5m Pipe length: 5m Outdoor temp.(°C) Outdoor temp.(°C) WGH12E-GH12E (LCLH) Cooling Heating Condition Condition Indoor:DB27°C WB19°C...
  • Page 9 WGH-E / GH-E Model: 12 Indoor fan motor rotating speed (rps) Compressor speed (rps)
  • Page 10 WGH-E / GH-E Model: 12 12K (LC) 12K (LCLH) 12K (LC) 12K (LCLH)
  • Page 11 WGH-E / GH-E Model: 12 Φ55 Φ55...
  • Page 12 WGH-E / GH-E Model: 12 GH12E...

  • Page 13: Indoor Unit

    WGH-E / GH-E Model: 12 WGH12E-GH12E Indoor unit Outdoor unit Gas pipe side Valve 4-Way valve Di s charge Heat Accumlator Suction exchanger Compressor (evaporator) Heat exchanger Liquid pipe (condenser) side Valve Strainer Electron Capillary Strainer expansion valve COOLING HEATING...
  • Page 14 WGH-E / GH-E Model: 12 WHG12E...
  • Page 15 WGH-E / GH-E Model: 12 GH12E (LCLH) GH12E (LC)
  • Page 16 WGH-E / GH-E Model: 12...
  • Page 17 WGH-E / GH-E Model: 12 5 6 7...
  • Page 18 WGH-E / GH-E Model: 12 ON/OFF button FAN button MODE button +/- button TURBO button button button CLOCK button TIMER ON/ TIMER OFF button TEMP button button (before opening cover (after opening cover I FEEL button ON/OFF button LIGHT button FAN button X-FAN button QUIET button...
  • Page 19 WGH-E / GH-E Model: 12 ATUO Low fan Medium-low fan Medium fan Medium-high fan High fan AUTO COOL HEAT...
  • Page 20 WGH-E / GH-E Model: 12...
  • Page 21 WGH-E / GH-E Model: 12...
  • Page 22 WGH-E / GH-E Model: 12 battery reinstall remove Cover of battery box...
  • Page 23 WGH-E / GH-E Model: 12 1Temperature Parameters Indoor preset temperature (Tpreset) Indoor ambient temperature (Tamb.) 2 Basic functions (The temperature in this manual is expressed by Centigrade. If Fahrenheit is used, the switchover between them is Tf=TcX1.8+32.) Once the compressor is energized, there should be a minimum interval of 3 minutes between two start-ups. But if the unit is de-energized and then energized, the compressor can restart within 3 minutes.
  • Page 24 WGH-E / GH-E Model: 12 Start heating Tpreset +5 ˚C Previous running status Tpreset +2 ˚C Tamb. Start heating 6 min. 3 min. 6 min. Compressor Blow residual Outdoor unit Blow residual heat heat Indoor unit 2 min. 2 min. 4-way valve Stop 2.3.2 Defrosting and Oil Return...
  • Page 25 WGH-E / GH-E Model: 12 When 9 Tindoor amb. 11 , indoor unit will operate at medium speed; When Tindoor amb.≥11 indoor fan will operate at low speed; When changing among low high, medium, and low speeds, the minimum operation time is 210 seconds. 2.6.5 If the unit has memory function, 8 heating function will be memorized.
  • Page 26 WGH-E / GH-E Model: 12 Timer Change Although timer has been set, the unit still can be turned on/off by pressing ON/OFF button of the remote controller. You can also set the timer once again, and then the unit will operate according to the last setting. If timer ON and timer OFF are set at the same time during operation of the unit, the unit will keep operating at current status till OFF time reaches.
  • Page 27 WGH-E / GH-E Model: 12 Tamb. Tpreset +3 Tpreset Tpreset -2 High Med. Mute Fan s eed 3.8 Vertical Swing 3.8.1 Small Horizontal Louver After energization, vertical swing motor will firstly have the horizontal louver rotate anticlockwise to position O to close air outlet. If swing function has not been set after startup of the unit, horizontal louver will turn clockwise to position D1 in HEAT mode.
  • Page 28 WGH-E / GH-E Model: 12 This position is start point 3.10 Display 3.10.1 Operation and Mode Icons Upon energization, the unit will display all icons within 3 seconds. Under standby state, LED lamp of standby is on. If the unit is turned on by remote controller, LED lamp of operation is on;...
  • Page 29 WGH-E / GH-E Model: 12 1. Compensation function of input parameters According to the structure of wall-mounting unit, considering the comfortability for operation, indoor ambient temperature when the compressor is at OFF status is higher than set temperature under heating mode. 2.
  • Page 30 WGH-E / GH-E Model: 12 11.2 Under cooling or drying mode, if T <6, the operation frequency of compressor may increase or decrease; inner tube 11.2.1 If the unit is stopped because of freeze protection for 6 times successively, it can’t resume operation automatically and the malfunction will be displayed continuously, which can only be resumed by pressing ON/OFF button.
  • Page 31 WGH-E / GH-E Model: 12...
  • Page 32 WGH-E / GH-E Model: 12...
  • Page 33 WGH-E / GH-E Model: 12...
  • Page 34 WGH-E / GH-E Model: 12 Start installation Preparation before installation Read the requirements select installation Prepare tools for electric connection location Select indoor unit Select outdoor unit installation location installation location Install wall-mounting Install the support of outdoor unit (select it according to the actual situation) frame, drill wall holes Connect pipes of indoor Fix outdoor unit...
  • Page 35 WGH-E / GH-E Model: 12...

  • Page 36: Outlet Pipe

    WGH-E / GH-E Model: 12 Wall Wall Level meter Mark in the middle of it Open-end Space Space wrench to the to the wall wall Union nut above above Pipe Pipe joint Union nut Pipe 150mm 150mm Torque wrench Right Left Indoor pipe Φ55mm...
  • Page 37 WGH-E / GH-E Model: 12 Panel Screw Wiring cover Indoor and outdoor power cord Indoor unit pipe Cable-cross Liquid hole pipe Band Drain hose Power connection wire Drain hose Connection pipe Band Indoor power cord N(1) yellow- brown blue black green Connect to outdoor unit Wiring board...
  • Page 38 WGH-E / GH-E Model: 12 N(1) Connect to indoor unit handle Drain vent Chassis Note: the wiring board is for reference only, Outdoor drain join t please refer to the actual one. Drain hose At least 3cm above the floor Foot holes Handle Valve Cover...
  • Page 39 WGH-E / GH-E Model: 12 The drain hose can't be fluctuant The water outlet can't be placed The drain hose in water can't be fluctuant The water outlet can't be fluctuant Liquid valve Piezometer Gas valve Valve cap Refrigerant charging vent Nut of refrigerant Charging vent...
  • Page 40 WGH-E / GH-E Model: 12...
  • Page 41 WGH-E / GH-E Model: 12...
  • Page 42 WGH-E / GH-E Model: 12...
  • Page 43 WGH-E / GH-E Model: 12...
  • Page 44 WGH-E / GH-E Model: 12...
  • Page 45 WGH-E / GH-E Model: 12...
  • Page 46 WGH-E / GH-E Model: 12...
  • Page 47 WGH-E / GH-E Model: 12 Troubleshooting for F1,F2 malfunction the wiring terminal between the temperature sensor and the controller loosened or poorly contacted? Insert the temperature sensor tightly Is malfunction eliminated Is there short circuit due to trip - over of the parts? Make the parts upright Is malfunction...
  • Page 48 WGH-E / GH-E Model: 12 Start Turn the fan blades by hand under power-off condition Adjust the motor and blade Whether the fan blades assembly so that rotor can run can run smoothly? smoothly. Turn unit on to check whether the malfunction is eliminated.
  • Page 49 WGH-E / GH-E Model: 12 Troubleshooting for C5 malfunction Appearance of Is there jumper cap on the the jumper cap mainboard ? Assemble the jumper cap with the same model Is malfunction eliminated the jumper cap inserted correctly and tightly ? Insert the jumper cap tightly...
  • Page 50 WGH-E / GH-E Model: 12 Start Cut off power, check if the wire between indoor unit and outdoor unit, and the wire inside electric box are connected correctly Reconnect the wire Malfunction is according to Connected correctly? eliminated wiring diagram Is there incorrect Match them match between the mainboard...
  • Page 51 WGH-E / GH-E Model: 12 Test3 Test4 Test1 Test5 Test2 Test8 Test9 Test7 Test6...
  • Page 52 WGH-E / GH-E Model: 12...
  • Page 53 WGH-E / GH-E Model: 12 Turn on the unit and wait 1 minute Use DC voltmeter to measure the voltage on the two ends of electrolytic capacitor Fault with the voltage Replace the control testing circuit on Voltage higher than 200V? panel AP1 control panel AP1 Measure the AC voltage between...
  • Page 54 WGH-E / GH-E Model: 12...
  • Page 55 WGH-E / GH-E Model: 12 Energize and switch on Use AC voltmeter If the voltage Check the supply to measure the IPM protection between terminal L voltage and voltage between occurs after the and N on wiring terminal L and N machine has run for restore it to board XT is within...
  • Page 56 WGH-E / GH-E Model: 12 Anti-high temperature, overload protection Normal protection, please use If the outdoor ambient temperature is it after improve the outdoor higher than 53 ºC? ambient temperature After the unit de- energized for 20min Improve the If the radiating of outdoor radiating environment of and indoor unit is well?
  • Page 57 WGH-E / GH-E Model: 12 Energize the unit and start it If the stop time is not enough and the If the stop time of compressor high and low pressure of system is not is more than 3min? balance , please start it after 3min Improve the connection situation If the compressor wire COMP(UVW) is of control board AP1 and...
  • Page 58 WGH-E / GH-E Model: 12 Synchronism Synchronism after energize the unit occurred during and start it operation Check if the fan Replace fan If the stop time of If the outdoor fan works terminal OFAN is capacitor C1 compressor is more than normally? connected well 3min...
  • Page 59 WGH-E / GH-E Model: 12 After the unit de-energized for 20min If the overload protector SAT is well connected? Under ambient temperature, test the resistance of overload protector with ohmic Connect wire If the wiring terminal FA of electron well with wiring expansion is well connected? diagram The resistance value of...
  • Page 60 WGH-E / GH-E Model: 12 Start Check the connection wire of reactor (L) of outdoor unit and PFC capacity Replace connection If there is damaged If the malfunction is wire with circuit short circuit removed? diagram Remove PFC capacity and test resistance of two terminals Capacity is Re-energize...
  • Page 61 WGH-E / GH-E Model: 12 Start If the unit is operation normal before malfunction Check connection wire of indoor and outdoor unit with circuit diagram Check built- in wiring of Connection indoor and correct? outdoor unit Malfunction of Check connection circuit is If the wiring is wire of indoor and...
  • Page 62 WGH-E / GH-E Model: 12...
  • Page 63 WGH-E / GH-E Model: 12...
  • Page 64 WGH-E / GH-E Model: 12 MODE ON/OFF...
  • Page 65 WGH-E / GH-E Model: 12 WGH12E (LCLH) WGH 12E (LC)
  • Page 66 WGH-E / GH-E Model: 12 GH12E (LCLH)
  • Page 67 WGH-E / GH-E Model: 12 GH12E (LCLH) GH12E (LCLH)
  • Page 68 WGH-E / GH-E Model: 12 GH12E (LC)
  • Page 69 WGH-E / GH-E Model: 12 GH12(LC) GH12(LC)
  • Page 70 WGH-E / GH-E Model: 12 WGH12E Steps Procedure 1. Before disassembling the unit Before disassembling the unit. 2. Remove filter Open the panel. Loosen the clasps on filter, push the filter inward and then pull it upward, then the filter can be removed.
  • Page 71 WGH-E / GH-E Model: 12 Steps Procedure Remove the rotating shaft of big guidelouver from the groove, slightly bend thebig guide louver to remove it. big guide louver Remove the axial bushing of small guidelouver. axial bushing Remove the rotating shaft of small guide louver from the groove, slightly bend the small guide louver to remove it.
  • Page 72 WGH-E / GH-E Model: 12 Steps Procedure panel, to remove the display. 5.Remove front case Remove the screws fixing electric box cover 2, to remove the electric box cover electric box cover 2 screw screw clamp Remove the screws fixing front panel, loosen the clamps, to remove the front panel.
  • Page 73 WGH-E / GH-E Model: 12 Steps Procedure 6.Remove swing fan blade Loosen the clamps fixing swing connecting rod, to remove the swing connecting rod. clamp swing connecting rod clamp remove the swing fan blade. swing fan blade 7.Remove electric box sub-assy heat exchanger thermistor Remove the indoor tube temp.
  • Page 74 WGH-E / GH-E Model: 12 Steps Procedure to remove the cover. electric box cover electric box cover sub-assy screw Remove every wiring terminals, and remove the electric box cover sub-assy. 7.Remove evaporator sub-assy auxiliary piping pipe clamp Remove the screws fixing connection pipe clamp, to remove the connection pipeclamp.
  • Page 75 WGH-E / GH-E Model: 12 Steps Procedure auxiliary piping Remove the screws fixing evaporator sub-assy, slightly regulate the tube, to remove the evaporator sub-assy. evaporator sub-assy 8.Remove cross fan blade and motor motor, to remove the motor. up&down swing motor to remove the motor.
  • Page 76 WGH-E / GH-E Model: 12 Steps Procedure Remove the screws fixing motor clamp, to remove the motor clamp. screw motor clamp Remove the cross fan blade and motor. bearing cushion rubber base Remove the shafting bearing cushionrubber base cross fan blade motor bladeandmotor, and then remove the motor.
  • Page 77 WGH-E / GH-E Model: 12 GH12E 1. Before disassembly 2. Remove top cover Remove the screws connecting top cover, left and right side plate, as well as panel, to remove the top top cover cover. 3. Remove handle Remove the screws connecting handle and right side plate, to remove the handle.
  • Page 78 WGH-E / GH-E Model: 12 4. Remove panel and grille Remove the screws fixing panel, to remove the panel. Remove the screws connecting panel grille and panel, loosen the clamp, to remove the panel grille. panel grille 5. Remove valve cover Remove the screw fixing valve cover, to remove the cover.
  • Page 79 WGH-E / GH-E Model: 12 6. Remove left side plate Remove the screws fixing left side plate and condenser support board, to remove the left side plate. left side plate 7. Remove cross fan blade Remove the screw nut fixing cross fan blade, remove the gasket and spring cushion, to remove the cross fan blade.
  • Page 80 WGH-E / GH-E Model: 12 9. Remove electric box assy cover electric box Remove screws fixing electric box assy and mid-isolation board, loosen the bonding tie, pull off the wiring terminal, lift to remove the electric box assy. electric box assy 10.
  • Page 81 WGH-E / GH-E Model: 12 12. Remove mid-isolation board Remove the screws connecting mid-isolation board, chassis and condenser assy, to remove the mid-isolation. mid-isolation board 13. Remove four-way valve assy four-way valve assy Welding cut the spot weld of four-way valve assy, compressor air suction/discharging valve and condenser pipe outlet, lift to remove the four-way valve assy.
  • Page 82 WGH-E / GH-E Model: 12 15. Remove big and small valve assy Remove screws connecting condenser assy and chassis, to remove the condenser assy. Remove the screws fixing big and small valve, to remove the valves. small valve big valve condenser assy...
  • Page 83 WGH-E / GH-E Model: 12...
  • Page 84 WGH-E / GH-E Model: 12 Pipe Pipe cutter Leaning Uneven Burr Pipe Shaper Downwards Union pipe Pipe Hard mold Expander Pipe Smooth surface Improper expanding leaning damaged crack uneven surface thickness The len g th is e q ual...
  • Page 85 WGH-E / GH-E Model: 12...
  • Page 86 WGH-E / GH-E Model: 12...
  • Page 87 WGH-E / GH-E Model: 12...
  • Page 88 R410A Systems Vidicon Ltd. Commercial Air Conditioners...

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